#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N=10005;
ll n,i,j,m,k,ans;
int main()
{
    std::ios::sync_with_stdio(false);
    freopen("arena.in","r",stdin);
    freopen("arena.out","w",stdout);

    return 0;
}
